[JSON Logic] Part 7: Add conditional logic checking

[brennj]

Definitely a more involved one 😅 :

• We will parse conditionals now in x-jsf-logic via a special processJSONLogicNode function which goes through anything particular to JSON logic.
• During the calculation of conditional properties, we'll now calculated computed attributes if any and spread them, we'll also apply any validations that need to be added.
• Adds the logic for the special if statements only available in x-jsf-logic (which can have an if statement without properties but computedValues and validations checks)
• Lots of tests and schemas with more to come (breaking some extra tests into its own PR because theres just so much...)

[brennj]

I think everything is covered here, let me know if I'm missing anything